Browse > Article
http://dx.doi.org/10.5762/KAIS.2014.15.8.4809

Estimation of FDS Prediction Performance on the Operation of Water-Mist  

Ko, Gwon Hyun (Dept. Architecture and Fire Prevention Administration, Dongyang University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.8, 2014 , pp. 4809-4814 More about this Journal
Abstract
The aim of the present study was to estimate the prediction performance of a FDS (Fire Dynamic Simulator) to simulate the fire behaviors and suppression characteristics by operating a water-mist. Rosin-Rammler/log-normal distribution function was used to determine the initial droplet distribution of water-mist and the effects of its model constant were considered. In addition, the simulation models were validated by a comparison of the predicted fire suppression characteristics with water-mist injection pressures to the previous experiments, and the thermal flow behaviors and gaseous concentration variations were analyzed. The results showed that water-mists with the same mean diameter were affected by the characteristics of the droplet size distribution, which have different size and velocity distributions at the downstream location. The fire simulations conducted in this study determine the initial droplet size distribution tuned to the base of the spray characteristics measured by previous experiments. The simulation results showed good agreement with the previous measurements for temperature variations and fire suppression characteristics. In addition, it was confirmed that the FDS simulation with a water-mist operation supplies useful details on estimations of the thermal flow fields and gaseous concentration under water mist operation conditions.
Keywords
Fire simulation; water-mist; fire suppression; droplet size distribution;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Grant, J. Brenton, D. Drysdale, "Fire Suppression by Water Sprays", Progress in Energy and Combustion Science, Vol. 26, pp. 79-130, 2000. DOI: http://dx.doi.org/10.1016/S0360-1285(99)00012-X   DOI   ScienceOn
2 C. C. Ndubizu, R. Ananth, P. A. Tatem, V. Motevalli, "On Water Mist Fire Suppression Mechanisms in a Gaseous Diffusion Flame", Fire Safety Journal, Vol. 31, pp. 253-276. 1998. DOI: http://dx.doi.org/10.1016/S0379-7112(98)00007-1   DOI
3 G. G. Back, B. Lattimer, C. L. Beyler, P. J. DiNenno, R. L. Hansen, "Full-Scale Testing of Water Mist Fire Suppression Systems for Small Machnery Spaces and Spaces with Combustible Boundaries", USCG Report No. CG-D-21-99, 1999.
4 Z. Liu, A. K. Kim and J. Z. Su, "Examination of Performance of Water Mist Fire Suppression Systems Under Ventilation Conditions", Journal of Fire Protection Engineering, Vol. 11. pp. 164-193, 2001. DOI: http://dx.doi.org/10.1106/3VE8-WWT4-C3U4-FEH9   DOI
5 W. K. Chow and B. Yao, "Numerical Modeling for Interaction of Water Spray with Smoke Layer", Numerical Heat Transfer, Part A., Vol. 39, pp. 267-283, 2001. DOI: http://dx.doi.org/10.1080/104077801300006580   DOI
6 C. Beihua, L. Guangxuan, H. Zhen, "Extinction Limit of Diesel Pool Fires Suppressed by Water Mist", Journal of Fire Sciences, Vol. 27, pp. 5-26, 2009. DOI: http://dx.doi.org/10.1177/0734904108095337   DOI
7 M. B. Kim, Y. J. Jang, M. O. Yoon, "Extinction Limit of a Pool Fire with a Water Mist", Fire Safety Journal, Vol. 28, pp. 295-306, 1997. DOI: http://dx.doi.org/10.1016/S0379-7112(97)00011-8   DOI   ScienceOn
8 S. C. Kim, H. S. Ryou, "An Experimental and Numerical Study on Fire Suppression Characteristics Using a Water Mist in an Enclosure", Building and Environment, Vol. 38, pp. 1309-1316, 2003 DOI: http://dx.doi.org/10.1016/S0360-1323(03)00134-3   DOI   ScienceOn
9 K. B. McGrattan, S. Hostikka, J. E. Floyd, H. R. Baum, R. G. Rehm, "Fire Dynamics Simulator (Version 5), Technical Reference Guide", NIST SP 1018-5, NIST, 2007.